| 摘要 |
PROBLEM TO BE SOLVED: To reduce the labor and the time to pull out a pipe, by providing a stopper to stop the displacement of an engaging ring to the shallow part of a taper wall, in a housing of the engaging ring. SOLUTION: When a winding pipe is connected to a pipe coupling, a taper part at the connecting tip of the winding pipe is set at the inside of a C-ring 4, and it is inserted as it is. As a result, the C-ring 4 is opened so as to pass the winding pipe, the inner diameter of a water-proof packing 7 is expanded, and the winding pipe can be inserted to the pipe stopper 3 of a coupling at a stroke. When it is made necessary to pull out the winding pipe some day, a small screw is screwed in a screw hole 13 provided at the connection 1 of the coupling, and displacement of the C-ring 4 to the shallow part of a taper surface from the innermost side of a triangular groove 5 is prevented. By pulling out the winding pipe under such a condition, the C-ring 4 is at the deep side of the triangular groove 5 where the inner diameter is the largest, and as a result, the C-ring 4 is pushed out from the groove of the connection of the winding pipe, so as to expand the diameter, and the winding pipe can be pulled out easily. |
